EMG and GSR signals for evaluating user's perception of different types of ceramic flooring

Laparra-Hernández, José; Lois, Juan Manuel Belda; Medina, Enrique; Campos, Nadia; Poveda, Rakel

doi:10.1016/j.ergon.2008.02.011

Cited by 44 publications

(16 citation statements)

References 21 publications

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“…This kind of normalization considers for the maximum value recorded for each user and all the images that the subject examines in one session (see also Laparra-Hernández et al, 2009). Significant differences have been found with the normalization with the relaxations (black slides) done before asking the subject about any concept and not affected by the previous history (_net_), whereas no differences were found with the use of the relaxation before stimulus (_ni_).…”

Section: Discussionmentioning

confidence: 99%

“…Arousal characterizes elicitation of emotion and emotion intensity. Thus, for the understanding of product perception, facial EMG and GSR have a potential use (Laparra-Hernández et al, 2009). For these reasons, facial EMG and GSR are the most suitable bio-signals for applying the dimensional appraisal in order to distinguish between product design alternatives.…”

Section: Measuring Emotionsmentioning

confidence: 99%

“…These methods have several shortcomings. It is possible that the customer will change their answer deliberately because they prefer to hide their feelings, and it is also possible for the costumer to get confused because the differences between products are very subtle (Laparra-Hernández et al, 2009). The experimenter can influence the customer and change their answer too (Czerwinski et al, 2001;Nielsen and Levy, 1994).…”

Section: Emotions and Purchase Decisionsmentioning

confidence: 99%

“…Otherwise S can be the 75th percentile of the signal during a fixed time (6 s) for all the products. The variables calculated with this criterion have the suffix _MF (Laparra-Hernández et al, 2009).…”

Section: Signal Processingmentioning

confidence: 99%

“…The phasic component is more event-related, with fast changes (peaks) interpreted as responses to a specific stimuli, and is related to the arousal level. Furthermore, the GSR signal was filtered using a fifth Butterworth lowpass filter (cut-off frequency of 0.05 Hz) (Laparra-Hernández et al, 2009;Heino et al, 1990).…”

Section: Signal Processingmentioning

confidence: 99%

See 4 more Smart Citations

Objectifying user attention and emotion evoked by relevant perceived product components

Schmitt

Köhler

Durá

et al. 2014

J. Sens. Sens. Syst.

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Abstract. A company's aim is to develop products that engage user attention and evoke positive emotions. Customers base their emotional evaluation on product components that are relevant for their perception. This paper presents findings of both identifying relevant product components and measuring emotions evoked by relevant perceived product components. To validate results, the comparison with self-reporting methods identifies similarities and differences between explicit expressed and implicit recorded customer requirements. On the one hand, eye tracking is applied to deduce the attention provoked by perceived product components. In order to link the product strategy with product components, the paper presents results considering the fact that the gaze track is affected by current thoughts. (Köhler et al., 2013(Köhler et al., , 2014aKöhler and Schmitt, 2012) On the other hand, since self-reporting tools are only useful for obtaining information about the conscious part of customers' emotions, there is a need for measurement methods that measure the changes in physiological signals (bio-signals). Arousal is similar to emotional intensity and is related to the galvanic skin response. Positive or negative emotions are defined by the valence that is measured by facial electromyography. Findings are presented that relate changes in bio-signals on the aesthetical design to the global product impression as well as to emotions and, subsequently, linking changes in physiological signals to the evaluation of semantic concepts and design parameters. The presented approach provides conclusions and valid information about products as well as product components that provoke certain emotions and about product components linked to a certain product concept, which could be part of a product strategy. Consequently, hard facts and special design rules for emotional product design can be deduced.

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Section: Discussionmentioning

confidence: 99%

Section: Measuring Emotionsmentioning

confidence: 99%